WECC Load Composition Model Presentation for WECC Significant
- Slides: 11
WECC Load Composition Model Presentation for WECC Significant Electrification Task Force August 2019 1
How We Construct Dynamic Load Models Temperature Profile, Season Building Models Temperature-dependent cooling and heating models Base Load shapes (Lighting, Cooking, Refrigeration, …) End-Use Electrification End-Use Load Shape 24 h Cooling Ventilation Refirgeration …. “Rules of Association” Load Model Component Shape Mapping between end -uses and CMLD model components, ( e. g. “Cooling” = 80% Motor A + 20% Motor B) 24 h Motor A Motor B … Power Electronic Constant Current … 2
Increasing Percentage of Electric End-Uses Are Connected to the System through Power Electronics Variable Frequency Drive 60 HP Fan Motor 3
Increasing Percentage of Electric End-Uses Are Connected to the System through Power Electronics Variable Frequency Drive Cooling 60 Tower Fan HPCooling Fan Motor Water Pump 4
Rules of Association – Existing Motor A Motor B Motor C Motor D Power Electronic DG Static P Resistive Static P Current Heating Cooling Vent 0. 3 0. 8 0. 05 0. 85 0. 1 0. 05 0. 7 Water Heat Cooking Refrig Office Ext. Light Int. Light Equip Misc Process Motors Air. Comp 1 0. 5 0. 2 0. 5 1 0. 2 0. 15 0 1 1 1 0. 3 0. 8 1 1 5
Rules of Association – Commercial Energy Efficiency Water Heat Cooking Refrig Heating Cooling. Vent Motor A 0. 3 0 Motor B 0 Motor C 0 Office Ext. Light Int. Light Equip Air Process Motors Comp Misc 1 0. 2 0 0 1 1 Motor D 1 Power Electronic 1 0 0. 5 0 1 1 DG Static P Resistive Static P Current 0. 7 1 0. 8 1 0 6
Existing Load Composition Northern California Valley – Summer Peak Motor A – 3 ph compressor Motor B – fans Motor C – pump, small fan Motor D – 1 ph compressor 7
Commercial Energy Efficiency Load Composition Northern California Valley – Summer Peak 8
EE plus 20% residential EV Load Composition Northern California Valley – Summer Peak 9
Stability Studies where Dynamic Load Matters a) Faults, voltage recovery, loss of load in large metro areas b) Intertie power and voltage swings c) Inter-area power oscillations d) Frequency response 10
Let’s Discuss the Studies… 11
